Improvement in bolting-mills



@nit-2h faire datent ffirr.

Leners Parent No. 81,973, dared september e, 186s.

y IMPROVEMENT IN ROLLING-MILLS.

@tige .Scintille referat tu in tigers Miers aient mit milking pari uftte irme.

TO ALL WHOM IT MAY CONCERN:v

Be it known that I, JOSEPH H. C. BAGHELDER, of Winsted, county ofLitchfield, and State of Connecticut, have invented an ImprovedRolling-Mill; and I do hereby declare the following to be an exactdescription thereof, reference being had to the accompanying drawings,and to the letters of reference marked thereon, making a part of thisspecification, in which- Figure 1 represents a front view of themachine.

.Figure 2 represents a top view of the same. v A

Figure 3 is a sectional view, showing the slide and wedge in the properposition, and their rack-and'-pinion gearing; also, showing theself-acting tongs lwith their operating-devices.

Figure 4 represents a longitudinal sectional view of the lowerworking-devices of the machine.

Figure 5 is a sectional view, showing the manner of hanging thebearings,`in which the cog-gearing operates..

Figure 6 represents a sectional view ofl the guard and slide, that maybe substituted when the bar of iron 4 or other metal is to receive acorrugated or irregular surface. i The nature of my invention consistsin the construction of a rolling-mill, so arranged that a bar of iron orother metal may be rolled to any desired taper or length; the taperofthe bar being' regulated by means of two sectional-hinged slidesoperating under the bearings of the lower roll, and operated by pinionsgearing into racks on the under side of each slide, Between the sectionsof each slide a graduated wedge is inserted, which, during the operationof the machine, causes the lower roll to gradually rise, in conformityto the taper ofthe wedge inserted, thereby giving a corresponding taperto the bar as it passes through the rolls. The length of the taper canbe carried to' any extent desired, by means of these sectional slidesand wedges, and is regulated by a very simple automatic device, which Iwill describe.

Into the lower section ofthe inner slide I insert a pin, at a distancefrom the end ofthe slide to correspond 3 with the length of taper thebar is to receive, vand as the slides move forward, the pin comesincontact with a i dog, which is pressed forward, and operates ahell-leverand clutch, which throws the connections of the lower shaft out of gear.The lower working-devices being then stationary, the bar passes onthrough the rolls, and is rolled without any taper,the rest of itslength.

I also attach to the frame, and directly in front of the rolls, aself-acting feeder or tongs, that are operated by meansfof a cam-wheel,on the lower shaft, in connection with an arm or lever projecting fromthe lower` part oi' the tongs; this arm or lever being kept in itsposition against the face of the cam-wheel by a spiral spring that isattached to its upper side and to the lower side of the guide-plate infront of the rolls. The bar having been placed between the jaws ofthetongs, with one end close to the rolls, the tongs alternately receive abackward-and-forward motion by means of the cam-wheel, which gives aregular and steady feed oi' the bar to the rolls. i i l i l A representsthe bed-plate that support-s the devices of the machine. l

B B, the upright frames `supporting the cog-gearingthat gives motiontothe rollsand to the various` working-devices.

C C are the upright frames thatsupport the rolls, and through which theslides with their graduated wedges operate. v

DD are the pinio'ns by which the rolls receive their motion, figs. 1 and2.

E E, the sleeve-couplings, connecting the pinion-journals to thejournalsof the rolls, figs. 1, 2, and 5.

F is the'upper roll, revolving in stationary bearings ,in the frame C C.

G is the lower roll, working in movable bearings, H H, figs. 3 and 6,that rest upon the upper faces of the sectional-hinged slides J J, figs.1, 2, 3, 4.

The upward or ascending motion of the roll G, which gives the taper tothe bar, is produced by means of the graduated wedges K, iig. 3, thatare inserted between the sections of each slide J, to any distance togive the taper to the bar that may be required.

Between the movable bearings H H and the slides J J are guards, L, iig.8, that are kept in their places by means ofpns passing into them fromthe under sides ofthe bearings H H; Upon the lower part of the guards Lare projections, M, that it into corresponding offsets, N, rigs. 3 andl6,-,in the upper faces of theV slides J J. The object of these guardsis to prevent the slides from being thrown from their proper positionsunder the rolls lduring their reverse motion, by the projection M of theguards L dropping and lclamping into the oisets N 'of the slides J andholding them in their proper places as soon as the wedges have passedfrom under the rolls.

0,1'ig. 3, are-racks, upon the under side of each slide J, that gearinto and receive their motion from pinions, -P P, figs. 1, 3, and 4,upon the lowerA shaft Q, and work in the lower part of the frames C.These pinions P P and shaft Q are operated by the cog-wheel R, figs. 1,2, 5, which gears into and receives its motion from the'lower pinion D.

T, gs. 1 and 2, are grooves in the rolls F and G, for the purpose ofgiving a regular and perfect finish to the edges of the bar.

U, iigs. 1, 3, 4, is a' cam-wheel on the shaft Q, the object of which isto operate the self-feeding tongs V',

S S, fig. 1, are openings through-the lower part of the frames CC,through which the slides J J operate. J

figs. 1, 2,3, by means of the lever W, figs.. 1, 2, 3, 4, that projectsfrom the lower part of the tongs V, andeis' v kept in its positionagainst the face of the cam-wheel by the spiral spring X, figs. 1 and 3,one end of which is attached to the upper side of the lever W, and theother end to the under side of the guide-plate Y,'gs. 1, 2, 3. The tongsV are carried forward towards the rolls by the cam-wheel U acting uponthe' lever W until the shoulders of the cam-wheel strike a depression inthe lever, when the tongs immediately fall back to take a new grasp uponthe iron, and as the can1-wheel revolves upon the lever, the tongs areagain carried forward, giving a uniform and regular feed of the bar tothe rolls.

. Z, figs. 2, 3, is the lever that operates the lower jaw of the tongsand holds the bar in its proper position whilst being carried to theguides a, figs. 1, 2, 3, that conduct the rod to its proper grooves inthe rolls F and G. b, figs. 1 and '4, is a pin, inserted into the lowersection and edge of the inner -slide J, at a distance from the end ofthe slide to correspond with the length of the taper the har is toreceive, and as the slide moves forward, the pin b strikes a dog, c,figs. 1,' 2, 3, 4, that is attached to one endV of a shaft, ol,'gs. 1,2, 4, 5, working in bearings, e e, and attached to the bed-plate A.

To the opposite end of the shaft d is attached an upright slotted arm,e', figs. 1, 2, 4;, 5, which receives and carries one arm of' thebell-leverf. The opposite arm of the bell-leverf passes through, andmoves backward, a horizontal slide, g.

h, figs. 1, 2, 4, 5, is a clutch, grasping the movable coupling l, figs.1, 2, 4, 5, of the shaft Q, and is operated by the clutch-arm passingthrough a slot in the horizontal slide g.

V When the pin bistrikes the dog c, the dog is pressed forward, andoperates the upright arm l', bell-lever f, and horizontal slide g. Theslide g, in its backward movement, carries with it the clutch h, whichinstantly throws the lower working-devices of the machinery out of gearby means of the movable coupling l.

The lower working-devices being now stationary, the bar passes throughthe rolls without any taper for the balance of its length. r p

fm, igs. 1, 2, 3, 4, is a treadle, connectedtol the shaft d by means ofa rod, n, figs. 1, 2, 4, andjs for the purpose of drawing the dog c toits proper place against the slide J.

p, figs. 1, 2, 3, 4, is a treadle, attached to one end of a loosesleeve, .s, upon the shaft t, gs. 2, 3, 4, of the treadle m. Upon theopposite end of the sleeve s is an upright arm, u, that gears into ashoulder, v, iigs. 1, 3, 4, on one end of the horizontal slide g.l i

The working-devicesare readily thrown into gear by 4pressing down uponthe treadle p, which, by the arm i u of the sleeve s, draws forward thehorizontal slide g and clutch IL with `the movable coupling l, when themachinery is again in full operation. y

w, figs. 1 and l2, is a spiral spring,l upon the shaft d, to prevent thedog c from workingkforward 'in front of l l the slide J. l

y y, figs. 1, 2, 3, are set-screws, forthe purpose of regulating thepressure 'of the boxes upon the journals of the roli F. I i

I do not coniine myself to merely rolling a bar of iron or other metalto a plain tapering surface, but design giving a bar a double-corrugatedor any uneven or irregular surface that may be desired. This object Iaccomplish by removing ther-guards L and plain slides J, andsubstituting in their places guards A and slides B', as

, shown in tig. 6, with faces (working together) corresponding-to theform the bar is designed to receive. l l' 1 When the pattern-guards A.'and slides IB'I are inserted, the operation of rolling is carried ouwith as great facility as though a bar were being worked up to a plainsurface.

G C', gs. 5, 6, are keys, inserted into slots in the frames B -B, andsupport the bearings of the cogs or lpinioes D D. i

D' D', iig. 3, are screw-bolts, passing down throhgh the tops of .theframes C C, and support the bearings Y .of the roll F.

WhatI claim as my invention, and desire to secure by Letters Patent, is-Y 1. The slides J' J, withtheir racks O, movable bearingsH H, graduatedwedges K, (guards L, and'pinions P P, whenarranged, constructed,and'operating as described, and forithepurpose set forth.

2. Also, the tongs V, with their lever Z, spiral spring X, lever W, andcam-wheel U, when arranged, constructed, and operating as described, andfor the purpose set forth. v i

3l Also, pin b on sliding wedge, iu combination with dog c, shaft d,upright slotted arm e', bell-lever f, horizontal side g, clutch h,movable coupling l, treadles m and p, rod n, spiral spring w,looseisleeve a, arm u d h ld ll ran ed ando eratin as set forth. Y an sou el a ar g P v g JOSEPH H. VCL BACHELDER.

Witnesses: D r

E.`S. Woonronn, S. F. DICKERMAN.

